Saturday, April 11, 2009

A Phone Call from GOD

God: Hello. Did you call me?
Me: Called you? No, who is this?
God: This is GOD. I heard your prayers. So I thought I will chat.
Me: I do pray. Just makes me feel good. I am actually busy now. I am in the midst of something.
God: What are you busy at? Ants are busy too.
Me: Don't know. But I can't find free time. Life has become hectic. It's rush hour all the time.
God: Sure. Activity gets you busy. But productivity gets you results.
Activity consumes time. Productivity frees it.
Me: I understand. But I still can't figure out. By the way, I was not expecting YOU to buzz me on instant messaging chat.
God: Well I wanted to resolve your fight for time, by giving you some clarity. In this net era, I wanted to reach you through the medium you are comfortable with.
Me: Tell me, why has life become complicated now?
God: Stop analyzing life. Just live it. Analysis is what makes it complicated.
Me: Why are we then constantly unhappy?
God: Your today is the tomorrow that you worried about yesterday. You are worrying because you are analyzing. Worrying has become your habit. That's why you are not happy.
Me: But how can we not worry when there is so much uncertainty?
God: Uncertainty is inevitable, but worrying is optional.
Me: But then, there is so much pain due to uncertainty.
God: Pain is inevitable, but suffering is optional.
Me: If suffering is optional, why do good people always suffer?
God: Diamond cannot be polished without friction. Gold cannot be purified without fire. Good people go through trials, but don't suffer. With that experience their life becomes better not bitter.
Me: You mean to say such experience is useful?
God: Yes. In every term, Experience is a hard teacher. She gives the test first and the lessons afterwards.
Me: But still, why should we go through such tests? Why can't we be free from problems?
God: Problems are Purposeful Roadblocks Offering Beneficial Lessons to
Enhance Mental Strength. Inner strength comes from struggle and endurance, not when you are free from problems.
Me: Frankly in the midst of so many problems, we don't know where we are heading.
God: If you look outside you will not know where you are heading. Look inside. Looking outside, you dream. Looking inside, you awaken. Eyes provide sight. Heart provides insight.
Me: Sometimes not succeeding fast seems to hurt more than moving in the right direction. What should I do?
God: Success is a measure as decided by others. Satisfaction is a measure as decided by you. Knowing the road ahead is more satisfying than knowing you rode ahead. You work with the compass. Let others work with the clock.
Me: In tough times, how do you stay motivated?
God: Always look at how far you have come rather than how far you have to go. Always count your blessing, not what you are missing.
Me: What surprises you about people?
God: When they suffer they ask, "why me?" When they prosper, they never ask "Why me". Everyone wishes to have truth on their side, but few want to be on the side of the truth.
Me: Sometimes I ask, who am I, why am I here. I can't get the answer.
God: Seek not to find who you are, but to determine who you want to be.
Stop looking for a purpose as to why you are here. Create it. Life is not a process of discovery but a process of creation.
Me: How can I get the best out of life?
God: Face your past without regret. Handle your present with confidence. Prepare for the future without fear.
Me: One last question. Sometimes I feel my prayers are not answered.
God: There are no unanswered prayers. At times the answer is NO.
Me: Thank you for this wonderful chat. I am so happy to start the day with a new sense of inspiration.
God: Well, Keep the faith and drop the fear. Don't believe your doubts and doubt your beliefs. Life is a mystery to solve not a problem to resolve. Trust me. Life is wonderful if you know how to live.

Monday, April 6, 2009

New virus-built battery could power cars, electronic devices

For the first time, MIT researchers have shown they can genetically engineer viruses to build both the positively and negatively charged ends of a lithium-ion battery.

The new virus-produced batteries have the same energy capacity and power performance as state-of-the-art rechargeable batteries being considered to power plug-in hybrid cars, and they could also be used to power a range of personal electronic devices, said Angela Belcher, the MIT materials scientist who led the research team.

The new batteries, described in the April 2 online edition of Science, could be manufactured with a cheap and environmentally benign process: The synthesis takes place at and below room temperature and requires no harmful organic solvents, and the materials that go into the battery are non-toxic.

In a traditional lithium-ion battery, lithium ions flow between a negatively charged anode, usually graphite, and the positively charged cathode, usually cobalt oxide or lithium iron phosphate. Three years ago, an MIT team led by Belcher reported that it had engineered viruses that could build an anode by coating themselves with cobalt oxide and gold and self-assembling to form a nanowire.

In the latest work, the team focused on building a highly powerful cathode to pair up with the anode, said Belcher, the Germeshausen Professor of Materials Science and Engineering and Biological Engineering. Cathodes are more difficult to build than anodes because they must be highly conducting to be a fast electrode, however, most candidate materials for cathodes are highly insulating (non-conductive).

To achieve that, the researchers, including MIT Professor Gerbrand Ceder of materials science and Associate Professor Michael Strano of chemical engineering, genetically engineered viruses that first coat themselves with iron phosphate, then grab hold of carbon nanotubes to create a network of highly conductive material.

Because the viruses recognize and bind specifically to certain materials (carbon nanotubes in this case), each iron phosphate nanowire can be electrically "wired" to conducting carbon nanotube networks. Electrons can travel along the carbon nanotube networks, percolating throughout the electrodes to the iron phosphate and transferring energy in a very short time.

The viruses are a common bacteriophage, which infect bacteria but are harmless to humans.

The team found that incorporating carbon nanotubes increases the cathode's conductivity without adding too much weight to the battery. In lab tests, batteries with the new cathode material could be charged and discharged at least 100 times without losing any capacitance. That is fewer charge cycles than currently available lithium-ion batteries, but "we expect them to be able to go much longer," Belcher said.

The prototype is packaged as a typical coin cell battery, but the technology allows for the assembly of very lightweight, flexible and conformable batteries that can take the shape of their container.

Last week, MIT President Susan Hockfield took the prototype battery to a press briefing at the White House where she and U.S. President Barack Obama spoke about the need for federal funding to advance new clean-energy technologies.

Now that the researchers have demonstrated they can wire virus batteries at the nanoscale, they intend to pursue even better batteries using materials with higher voltage and capacitance, such as manganese phosphate and nickel phosphate, said Belcher. Once that next generation is ready, the technology could go into commercial production, she said.

Lead authors of the Science paper are Yun Jung Lee and Hyunjung Yi, graduate students in materials science and engineering. Other authors are Woo-Jae Kim, postdoctoral fellow in chemical engineering; Kisuk Kang, recent MIT PhD recipient in materials science and engineering; and Dong Soo Yun, research engineer in materials science and engineering.

The research was funded by the Army Research Office Institute of the Institute of Collaborative Technologies, and the National Science Foundation through the Materials Research Science and Engineering Centers program.